Oil-well pump



' T. J.' BARGER.

ol'L WELL PUMP. APPLlc'IATloN- FILED A Pnfw, 1922;'

r l' Y E V v j rf v /iy /0 f Patented Der., Eil, lZ

L raiser Aralar OFFICE,

TOM J'. IBARGER, 0F OILTON', OKLAHOMA.

OILfWELL PUMP.

Application filed April 17, 1922. Serial No. 553,406.`

Oklahoma, have invented certainl new and useful Improvements in Oil-Well Pumps, of which the following is a speciication,

This invention relates to pumps, for oil Wells and other similar wells, which are provided with sand traps; and it consists in the novel construction and combination of the parts hereinafter fully described and claimed, which enable the foot valve to be raised and lowered in the sand trap for repair, without disturbing the suction pipe.

In the drawings, Figure 1 is a vertical section through a portion of a pump provided with improvements according to this inven-k tion. Fig. 2 is a cross-section, taken on the line 2 2 in Fig. 1.

The barrel et of the pump is provided with a slidable plunger 5 having ay longitudinal passage for the liquid. This plunger and all parts above it are of any approved construction. The barrel 4 is secured to a collar 7, and a sand trap 8 is secured to a tubular extension 27 on the lower part of the collar. This extension has a bell-mouthed or conical portion 28 which is considerably larger in area than the pump barrel.

The sand trap 8 is a cylindrical vessel of any desired length, and its lower end is closed by a tubular plug` 9 which is screwed` into the lower end portion of the sand trap, The plug'9 has the usual socket 10 at its lower part, and is vconnected. to the lower section of the suction pipe and to the'tubing 11 in the usual way.

Av foot valve 115 is arranged in a cage 16 having a long tubular stem 17. The valve cage has lateral openings 26 above the valve, and the tubular stem is supported in a guide 18 arranged in the sand trap and provided with radial spacing ribs 19-which hold it centrally in the sand trap.

The upper section 14C of the suction pipe is screwed into the plug 9 at itslower end, and its upper end portion is screwed into an internal enlargement 29 at the lower end to the tubular guide 18. The enlargement 29 is groove.

smaller in diameter than the guide 18, and i a shoulder 30 is formed at its upper end which supports 'the tubular stem 17 of they foot valve. i f

Theftubular stem 17 is provided with a circumferential groove 20, and 21 is packing material, such as leather, secured in the said in place by a short sleeve 31 which is screwed ony the lower endportion of the stem and which Yforms the bottom end of its circumf ferential groove. l The sand is discharged laterally into the conical or bell-mouthed lower part 28 of the extension 27, and falls by gravity into the' sand trap, and the liquid passes upwardly in theusual way through the plunger.

The foot valve and its stem can be removed and replaced without disturbing the suction pipe 14, as often as necessary, andy the bell-mouthedor conical part 28 enables thelstem 17 to be raised without any risk of injury to the soft kpacking by contact with any angular projections or shoulders. What I claimis: y

' 1. A pump barreha sand trap having its upper end secured to the pump barrel, means `for closing the lower end'of the sand trap, la suction pipe secured in the lower partof the sand trap, a tubular guide secured to the upper end portion of the said suction pipe and arrangedin the sand trap, and afoot valve provided with a 'tubular stem having packing material which is slidable in the said tubular guide and is supported therein independently ofthe said suction pipe.`

f 2. A pump barrel, a sand trap having its upper end secured to the pump barrel, means y for closing they lower end of the sand trap, a suction pipe secured in the lower part of The packing is preferably retained the sand trap, a'tubular guide arranged in c the sand trapv and having an inwardly projecting'enlargement at its lower part which is secured to the upperend portion of the suction pipe and which yforms a shoulder in the guide, and a foot valve provided with ay tubularstem which is slidable in the said guide and which is supported by the said n pump herr-el und hat-ving :in internally hellmout-hed extension at its lower part, a Sand tmp secured over the seid extension, means for closing the lower end of the sand trap, suction pipe Secured in the lower part of the sand trap7 a tubular guide secured to the upper pai-tof the suction-pipe, and afoot valve provided With a tubular stem having' packing material which is slidable in the said tubular guide and is supported therein independently of the said suction pipe.

In testimony whereof I have afixed my signature.

TOM J BA'RGER. 

